Tabs3 Billing includes a Flat Fee Billing feature, which allows you to enter your time for a matter normally throughout the billing period, and then write the amount of the fees proportionally up or down to a predetermined amount prior to running statements.
To configure a matter for flat fee billing
Once you have configured the matter for flat fee billing, you can enter time in Tabs3 Billing normally.
To adjust flat fee clients prior to running statements
Once the fees have been adjusted, you can run your statements normally.